Pump.



No. 739,234. PATBNTED'SEPT. 15., 1903.

z. STORCH.

PUMP. APPLIUATION FILED SEPT. 15, 1902.

I0 MODEL.

11/1? 2 2 a was M 142 can [62".- 1M4; law $259 m: no nms PETERS on. Puofdurno. wnsumumu. n. c

I cated intermediate of its ends.

UNITED STATES Patented September 15, 1903.

ZDENYSTOROH, OF ALAMEDA, CALIFORNIA.

PUMP.

SPECIFIGATION forming part of Letters Patent No. 739,284, ted September 15, 1903.

Application filed September 15, 1902. Serial No. 128,527. (No model.) I

To all whom) it may concern:

Be it known that I,ZDENY ST'OROH,a citizen of the United States, residing at Alameda, in

the county of Alameda and State of California, have invented certain new and useful Improvements in Pumps; and I do hereby declare the following to be a full, clear, and exact description of the same.

This invention relates to ahelical-runner pu mp. The difficulty heretofore encountered in this type of pump relates to the formation of internal eddies and interfering currents by the rotation of the runner. This is responsible for much of the waste and low effistated which will avoid the trouble referred to and show a high efficiency by constructing the runner in such a manner that the stream of water impelled thereby shall completely fill the space between the bladesat all points during its course through the runner notwithstanding its increasing velocity. Thus as the space allowed for the passage of the water is only suflicient to permit the given volume which enters the runners to pass out at the acquired speed of flow at the eduction end no internal eddies or cross-currents can be formed. 7 I a 'In order to carry out the objects and principles outlined, I construct this pump and its runner substantially as illustrated in the accompanying drawings, in whicha Figure 1 is asectionalelevation showing the pump-runner partly in full. Fig.- 2 is a crosssection through X'X of Fig. 1. I

Referring to the drawings, 1 is a multiplethreaded helix secured upon ashaft 2, the

helix being of acontinually and progressively diminishing pitch and its hub of conical form. The apex of the conical hub is toward the induction side. I preferably employ two runners, as described, but reversely formed.

A suitable casing 3, which incloses the runner, is provided with an intakepipe 4, The disthe eduction end of the runner.

the decrease being proportioned to the in crease of speed induced in the water during its passage through the pump.

Having now described my invention, what I claim isl. A pump comprising a helical runner within a substantiallycylindrical casing, the blades of the runner converging toward each other in the direction of the eduction end of the runner. I

2. A pump comprisin-gahelical runner having a conical hub within a substantially cy-. lindrical casing, the blades of the runner converging toward each other in the direction of A pump comprising a helical runner within a substantially cylindrical casing, the blades of the runner converging toward each other in the direction of the eduction end ofthe runner and a second substantially similar but reversely-formed runner.

4.-. A pumpcomprisingahelical runner having a conical hub within a substantially cylindrical casing, the blades of the runner converging toward each other in the direction of the eduction end of the runner and a second substantially similar but reversely-formed runner.

5. A pump comprising a helical runner having blades converging toward each other in the direction of the eduction end and a second substantially similar but reversely formed runner and a substantially cylindrical casing provided with an induction -'aperture sub stantially central of the duplex runner.

6. A pump comprising a helical runner with a conical hub having blades converging toward each other in the direction of the ed uction end and a second substantially similar but reversely-formed runner and a substantially cylindrical casing provided with an induction-aperture substantially central of the duplex runner.

too

9. A pump comprising a helical runner Within a suitable casing, the blades of the runner being so formed that the sectional area of the space defined by the adjacent blades and the casing continually diminishes from the induction to the eduction end of the runner and a second substantially similar but reversely-formed runner.

10. A pump com prisinga helical runner having a conical hub Within a suitable casing,

' the blades of the runner being so formed that the sectional area of the space defined by adjacent blades, the hub and casing continually diminishes from the induction to the eduction end of the runner and a second substantially similar but reversely-formed runner.

11. Apump comprisingahelical runner hav ing blades so formed that the sectional area of the space between the adjacent blades continually diminishes from the induction to the eduction end of the runner and a second substantially similar but reversely-formed runner and a substantially cylindrical casing provided with' an induction-aperture substantially central of the duplex runner.

12. A pump comprising a helical runner with a conical hub having blades so formed that the sectional area of the space between the adjacent blades continually diminishes from the induction to the eduction end of the runner and a second substantially similar but reversely-i'orined runner and a substantially cylindrical casing provided with an induction-aperture substantially central of the duplex runner.

ZDENY STORCH. lVitnesses:

D. B. RICHARDS, Jesse B. EOFF. 

